MASS-SPECTRA OF 1,2,4-OXADIAZOLE-5-THIONES AND 1,2,4-THIADIAZOLE-5-ONES


AGIRBAS H., SUMENGEN D.

SPECTROSCOPY LETTERS, vol.25, no.7, pp.1079-1088, 1992 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 7
  • Publication Date: 1992
  • Doi Number: 10.1080/00387019208018217
  • Title of Journal : SPECTROSCOPY LETTERS
  • Page Numbers: pp.1079-1088

Abstract

The mass spectra of 3,4-disubstituted-1,2,4-oxadiazole -5(4H)-thione and 3,4-disubstituted-1,2,4-thiadiazole-5(4H) -ones have been studied. The rearrangement of molecular ion of 1,2,4-oxadiazole-5-thiones to 1,2,4-thiadiazole-5-ones was proposed. Some major fragments observed in the spectra were interpreted and the fragmentation patterns involving McLafferty rearrangements were reported.